What is a close-up survey?

flowchart TD
    A[Special/Intermediate Survey] --> B[Identify areas for close-up]
    B --> C[Prepare access: staging, lighting]
    C --> D[Close-up survey: visual + thickness measurements]
    D --> E[Record thickness measurements]
    E --> F[Compare with approved plans]
    F --> G{Within limits?}
    G -->|Yes| H[Endorse survey report]
    G -->|No| I[Repair/replace, re-measure]
    I --> H
    H --> J[Class certificate endorsed]

• Definition: Close-up survey is a detailed structural inspection with thickness measurements to assess corrosion, wastage and deformation of hull members
• Purpose: Verify structural integrity and remaining scantlings for class and statutory compliance
• Regulatory basis: IACS UR Z7 §1.4 (thickness measurements and close-up surveys), UR Z101/Z102/Z72 §2.3 (extent of overall and close-up survey)
• Safety: IACS Rec 78 governs safe use of portable ladders for access
• CL1 role: Ensure preparation, access, safety arrangements, review findings, implement corrective actions and maintain records